Locktite allowance

The material references are because that’s what is required for the standard test procedure

… You need to ‘read between the lines’ in a lot of other documentation to realise that Copper is an accelerator

MichaelG.

page 10 gives a guide to how the strength drops depending on the material

As I read the spec, 601 can cope with total gap (both sides) of up to 0.1mm. So the side clearance of a round rod in a round hole should be no more than 0.05mm (about 2 thou)

In general the fit should be kept tighter than the 'up to' figure, tighter the better.

My experience:

• fresh glue essential because old glue gradually weakens with age.
• cleanliness is usually vital
• gap-fillers are a compromise. Thick bonds are weaker than thin bonds.
• Whether a key is needed or not depends on the type of glue. I don't think 601 needs a key.
• glue not a good idea if the joint gets hot

Dave

Edited By SillyOldDuffer on 23/08/2023 10:37:20

.

… and, without claiming to really understand the chemistry, I would hazard a guess that [for brass] the drop to 0.4x strength is consistent with the accelerated curing time that I mentioned .

MichaelG.

Edited By Michael Gilligan on 23/08/2023 11:15:08

For general reference … It may be worth repeating this, from a post a couple o& years ago:

..

: __ The standard ‘Pin and Collar’ test is briefly described here:

SORRY … that link is dead 

The ISO and ASTM standards are technically similar, but ISO uses Metric units

..

MichaelG.

Edited By Michael Gilligan on 23/08/2023 11:45:04

For anyone really interested, here is a 188 page PhD thesis

**LINK** https://core.ac.uk/download/pdf/144148736.pdf

MichaelG.